Two Sedans with some similarities, but otherwise different in most aspects such as the model year, starting price, horsepower, and fuel economy. First of all, there is a $15,555 difference in the base MSRP. The 2013 Lexus GS 350, an older vehicle by three model years, has a higher starting price than the 2016 Acura TLX. And finally, the 2013 GS 350 has bigger and thirstier engine; the 2016 TLX gets 4.5 more mpg. Among similarities are the body structure, market segment, ground shadow size, height, and maximum occupancy.